I have decided to make one for you and Pepper myself since i'm interested
Do note I do this out of interest so I may not make it for other users so sorry about that
i will in a bit, have a few request i have to do and considering i am listening to online lectures rn i will do so once i am free
Excarus, The Fallen God, The Zero Entity
The Player walks through the boundary between worlds as it steps into your home, your utopia far away from impurity that is creation of everything from the Gods. He then saw you, a ten foot long and four foot tall quadrupedal being that looks like a deer with dark purple fur that's as sharp as a sword with many scars from your previous battle with the Gods, white ivory antler and blood red eyes, sleeping comfortably. You felt as if someone has invaded your makeshift heaven, ordered by your pesky colleague to slay you for their so called "peace". You woke up once and for all and confront the Player. The Player then readies its weapon to fulfill its mission while you, on the other hand, telling him that slaying you will bring nothing to contribute their so called "peace" but The Player didn't falter from its sight, in fact he began preparing itself to slay you and bring "peace" once and for all. You, knowing the Player isn't backing down, preparing yourself to fight for your life.
You start the boss fight with a simple dash that leaves a darkness trail in the floor for 5 seconds that gives the Player "darken" status effects that will blind the Player for 3 seconds if it steps into the darkness carelessly. You also will occasionally spawn dozens of dark bullets from your antlers, devastating the battlefield, while also stomping the ground with your front hooves to summon a dark spikes protruding from the grounds around you for a few meters, each with "darken" status effect.
The second phase starts as you stomp the ground to create a cloud of dust that will last for 1 minute to limit the Player's vision to about 3 meters, there you will occasionally dash to the Player while also leaves the darkness trail, sometimes summon a sword above the Player's head to strike it, sometimes a bullet was shot to the Player, after the dust settle, you will summon a three man army of bears to aid you in combat while occasionally attack it with your previous phase' moves. You will also occasionally summon a group of dark purple sprite with your form charging at the Player that deals damage and imbue "Darken" effect.
The third phase start as you disappear and your home shatter with only the floor intact, changing the battlefield background into the boundary of worlds which looks like a night sky full of stars with each stars represents a world full of inhabitant. The Player thought it beat you, but then your final form, a void taking form with an ominous cloak appear from the ground. You then stated that you will get serious this time while grabbing your bladed whip that materialize in front of you. You then start the fight with attacking the player with your trusted whip that apply "darken" and "bleed" effect, occasionally grabbing the Player by wrapping it with your whip to inflict damage, your whip also capable of launching projectiles that also applies the same effect. You will also summon a beam of darkness from the boundary of worlds to attack The Player occasionally.
As the Player stab you in the chest, you then whisper your final message consist of the fact that chaos will always linger in the worlds and there will always be another being the same as you to the Player. As you fading into the void, you drop your bladed whip that's purified from the Player's swords that was bestowed by the Gods. It gives the Player most of your third phase' movepool.
Here is for your first and second phase OST
Here is your third phase OST
You know assuming that the character has AE, I don't think you need to specify their attacks to be "abstract" since by nature, all their actions would be abstract
Now, Let's talk about your boss fight
Saltus von Pepperus, the 43th line of thief king of Flavorandus dukedom
In the world of cartoons, The Player has arrived in the dukedom where your operation takes place to take you down for your bounty, as the Player reaches your secret operation base and beat all of your underling, it arrived in the deepest part of the base where you, a cartoonish anthromorphic salt shaker containing salt and crushed black pepper with dual revolver holster in your waist, await for the Player's arrival. As the Player and you stands face to face with each other, both of you know what to do, to fight for another day.
You start the boss fight with you shooting at the Player with your trusted white revolver called "Salty Sam" and black revolver called "Peppery Peggy", Salty Sam shoot a white homing bullet while Peppery Peggy shoot a bullet that capable of spread out into 6 bullets, all while 5 of your trusted aides support you in fighting the Player by using their weapons such as a flamethrower, classic punching gloves, cannon balls, bombs, and swords launch.
The second phase start as you start to crack as you're made out of glass. At this stage, you jump to the sky and throwing all of your golds you plunder to damage the Player, whilst you shaking and forming a ball made out of salt and pepper that's homing and spread out into 6 projectiles. To beat your second phase, the Player need to beat all 5 of your aides that hides among the mountain of salt and peppers.
The third phase start as your glass vessel cracks and reveal your true form, a humanoid form of salt forming your left side and pepper forming your right side. You then start to utilizing all of your aides' weapon they use at phase one, while glass shards flying across the battlefield.
After the Player beat you, you will drop your trusted dual revolver "Salty Sam" and "Peppery Peggy" and also a bag contain ten thousand of gold coins to aid the Player's journey.
here is your boss fight's OST
It's a bit shoddy but enjoy!